# Allow Only One Type of Discount in Billing

**YouTube:** [How to Prevent Applying Multiple Discount Types in Billing?](https://www.youtube.com/watch?v=Q_NGl6WHFuA)

## How to Prevent Applying Multiple Discount Types in Billing?

This feature ensures that **only one type of discount** is applied during billing, helping to maintain consistency and avoid billing errors.

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### Access Global Settings in Logic Admin

* Open **Logic Admin**.
* Navigate to **Global Settings**.
* Under **POS Options**, go to the **POS Options 1** section.
* Locate and enable the option labeled as: 

> **"Allow only one type of discount in billing"**

<figure><img src="/files/XSyMnba3KQuDHdnlFyuQ" alt=""><figcaption><p>Let's proceed with this option turned on to understand its practical implications in Voucher entry.</p></figcaption></figure>

* Click **Save** and **restart the software** to apply the changes.

***

### Implement the Restriction in Billing Screen

* Open the **Sale Bill - Touch Screen** window.
* Start a new sale transaction.
* Try applying **two types of discounts**, for example:
  * **TD (Trade Discount)** of 10%
  * **Scheme Discount** of ₹100 in “Other Details”

<figure><img src="/files/YYnASuTZkMgfzCqmjkd9" alt=""><figcaption><p>As shown above, two types of discounts are applied: a <strong>10% Trade Discount (TD)</strong> and a <strong>₹100 Scheme Discount</strong> under “Other Details.”</p></figcaption></figure>

***

### System Behavior

When you attempt to **save the bill**, the system will block the action and display an **error message**:

> *"Multiple discounts are not allowed in a single bill."*

<figure><img src="/files/5FoxH0rDxBu5jIeRnApt" alt=""><figcaption><p>As shown above, the system blocks the bill with the message: <strong>"Multiple discounts are not allowed."</strong></p></figcaption></figure>

***

**Purpose**: This feature enforces uniform billing practices by preventing conflicting or layered discounts within a single sale.


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